body {
  background: linear-gradient(135deg, #f5faff 0%, #e8f5e9 100%);
  min-height: 100vh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 24px #0002;
  padding: 40px 32px 32px 32px;
  max-width: 400px;
  width: 100%;
  margin: 32px auto;
  animation: fadeIn 1s;
}
.login-card h2 {
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 2rem;
  color: #4CAF50;
  font-weight: 700;
  text-align: center;
  text-shadow: 0 0 8px #4CAF5077;
}
.input-group {
  margin-bottom: 18px;
}
.input-group label {
  display: block;
  margin-bottom: 6px;
  color: #388e3c;
  font-size: 1rem;
  font-weight: 500;
}
.input-group input, .input-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #bdbdbd;
  border-radius: 6px;
  font-size: 1rem;
  background: #f9f9f9;
  transition: border 0.2s;
}
.input-group input:focus, .input-group select:focus {
  border-color: #4CAF50;
  outline: none;
}
#login-btn {
  width: 100%;
  padding: 14px 0;
  background: #4CAF50;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 10px;
  transition: background 0.2s, box-shadow 0.2s;
  letter-spacing: 1px;
  box-shadow: 0 0 12px #4CAF5077;
}
#login-btn:hover {
  background: #388e3c;
  box-shadow: 0 0 24px #388e3c88;
}
.error {
  color: #d32f2f;
  margin-bottom: 12px;
  text-align: center;
  font-size: 1rem;
  min-height: 1.2em;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(40px);}
  to { opacity: 1; transform: translateY(0);}
}